Emission permit system — a typeof transferable permit system in which the permits are defined in terms of the right to emit a stipulated amount of emissions.
排放许可系统——转让许可系统的一种类型,这个许可确定了在权限方面可排放物总额排放的约定。
2
A new typeof field emission cathode was devised.
设计了一种新的金刚石场发射阴极工艺。
3
Field emission display is a new typeof flat-panel display and field emission cathode is an important component part of field emission display.